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Finding the Fourth Proportional to 64,644.85, 89,220.50 and 37,782.11

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Solution

The fourth proportional to 64,644.85, 89,220.50 and 37,782.11 is: 52,145.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,644.85 : 89,220.50 = 37,782.11 : x
  2. Step 2: Convert to fraction form
    64,644.85/89,220.50 = 37,782.11/x
  3. Step 3: Cross multiply
    64,644.85x = 89,220.50 × 37,782.11
  4. Step 4: Simplify right side
    64,644.85x = 3,370,938,745.26
  5. Step 5: Solve for x
    x = 3,370,938,745.26/64,644.85
  6. Step 6: Final answer
    x = 52,145.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.